Steel shears.



I. W. CHENEY.

STEEL SHEARS.

APPLIUATION HLED MAY 25,1909.

Patented Jan. 10, 1911.

Wilnmu;

IRA W. CHENEY, 0F GREAT BEND, KANSAS.

STEEL SHEARS.

aerien.

Specification of Letters Patent.

Application filed May 25, 1909.

Patented J an.l 10, 1911.

Serial No. 498,337.

To all whom it may concern:

Be it known that I, IRA WV. CHENEY, citizen of the United States,residing at Great Bend, in the county of Barton and State of Kansas,have invented certain new and useful Improvements in Steel Shears, ofwhich the following is a specification.

This invention relates to machines for cutting sheet metal plates, barsand the like and has for its object to provide a strong, dui'able andthoroughly efficient machine of this character, the cutting jaws orblades of which are so arranged in the casing or housing as .positivelyto prevent the same from working loose and mashing or producing afeather edge on the metal when the latter' is cut.

A further object is to provide a portable Ymetal shearing machine, theoperating mech anism of which is entirely housed within the casing.

A still further object is generally to improve this class of devices soas to increase their utility, durability and efficiency, as well as toreduce the cost of manufacture.

For a full understanding of the invention and the merits thereof, andalso to acquire a knowledge of the details of construction and the meansfor effecting the result, reference is to be had to the followingdescription and accompanying drawings, in which;

Figure l is a prespective view of a metal shearing device constructed inaccordance with my invention; Fig. 2 is a longitudinal sectional view ofthe same; and Fig. 3 is a transverse sectional view.

Corresponding and like parts are referred to in the following drawingsand indicated in all the views of the drawings by the same referencecharacters.

The improved machine forming the subject matterof the present inventioncomprises an elongated casing 5, preferably rectangular in shape, asshown, and comprisin longitudinally disposed side walls spaced apart bythe end walls 6 to produce an intermediate chamber 7, the interior sidewalls of which are arranged parallel with each other throughout theirentire length and height.

Projecting vertically from the upper longitudinaledge of the casing 5 atthe front end thereof, and preferably formed integral therewith is astationary jaw 8, having its inner face provided with a detachable plate.9, formed of hardened steel and constituting one of the shear blades.

Disposed within the chamber 7 and pivotally mounted at 10 is a movablejaw 11, having one end thereof projected vertically through the open endof the casing .5 and also provided with a strip of hardened steel l2,comprising the mating shear blade, the blades 9 and 12 being detachablysecured to the adj a-cent jaws by means of bolts or similar fasteningdevices 13. The movable jaw 11 is extended at substantially right anglesto the vertical plane of the blade 12 to produce a rearwardlydisposedarm 111 having an elongated slot 15 formed therein` and adaptedto receive an eccentric 16 carried by the stub shaft 17.

Formed in the opposite side walls of the casing 5 are transverselyalined tapered openings 18, in which are seated correspondingly taperedbearing sleeves or bushings 19 for the stub shaft 17. The opposite endsof the stub shaft 17 are projected laterally beyond the adjacent sidewalls of the casing 5, and are provided with angular terminals 20 one ofwhich is adapted to receive the angular socket 21 of an operatinghandle, 22. By this arrangement the handle may be positioned on eitherside of the casing or housing without any material change in theconstruction of the machine. Thus it will be seen that by moving theoperating handle or lever 22 in one direction the eccentric 16 willactuate the movable jaw l1u to cut or sever the sheet metal bar or platebeing operated upon.

A lling block or spacing member 28 is interposed between the side wallsof the casing at the forward end thereof with its inner face spaced fromthe active face of the stationary jaw 9 to permit the free movement ofthe movable jaw 11, said spacing member serving to reinforce andstrengthen the casing at the stationary jaw.

Attention is here called to the fact that the opposite sides of themovable jaw are disposed in contact with the adjacent side walls of thechamber 7 so that the movable jaw is positively retained in position tocoact with the stationary jaw, thus elfeetually preventing wabbling ofthe movable jaw and mashing the metal during the cutting operation.

Extending laterally from the opposite ends of the casing 5 andpreferably formed integral therewith, are attaching lugs 24 havingopenings formed therein, or the reception of screws or similar fasteningdevices 25, which latter serve to anchor the casing on a floor or othersuitable support y and thus prevent the same from tipping over tion.

Thus Ait will be seen that there is provided a strong, durable machinecapable of being readily transported from place to place, and in whichthe operating mechanism is entirely housed within the easing or frame.

Having thus described the invention, what is claimed as new is:

vThe herein described metal shearing 1nachine comprising a substantiallyrectangular casing formed with spaced and paiallel sides, the said sidesbeing provided with transversely alined conical shaped openings, astationary cutting avv extending vertically from one of the side piecesof the casing at one end thereof, the said stationary cutting jaw beingarranged in 4the same plane as the side of the casing from which itprojects, a pivot bolt connecting the sides of the easing, a movablecutting jaw mountduring the cut-ting or shearing operaed upon the pivotbolt and having the body portion thereof received between the sides ofthe casing and frictionally engaging the saine to hold the movable jawagainst lateral displacement, one end of the movable jaw projectingupwardly into coperative relation with the stationary jaw While theopposite end of the movable jaw is formed with a rearwardly extendingangularly disposed slotted arm, frusto-conical bearings fitted withinthe before mentioned conical shaped openings in the sides of the casing,a shaft journaled within the said bearings and extending through theslotted arm oi the movable jaw, an eccentric rigid with the shaft andoperating Within the slot of the movable jaw, and a handle applied tothe shaft for turningthe same.

In testimony whereof I aiix my signature in presence of two witnesses.

IRA lV. CHENEY. [Ls] lVitnesses FRED FUTovERN, VILLIAM P. CoLEs.

